Direct Numerical Simulation of Concentration and Orientation Distribution of Fibers in a Mixing Layer
Joint Authors
He, Zhu
Zhou, Kun
Xiao, Ming
Yang, Wei
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-14
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The concentration and orientation of suspended fibers in a mixing layer are investigated numerically.
Two cases (diffusive and nondiffusive) are investigated for the fiber concentration distribution.
The fine structures of the instantaneous distributions under these two cases are very different due to molecular diffusion.
Sharp front of concentration is observed in the nondiffusive case.
However, there is no obvious difference in the mean concentration between the two cases.
With regard to the orientation, a fiber may rotate periodically or approach an asymptotic orientation, which is determined by a determinant defined with the stain rate.
The symmetric part of the strain rate tends to make a fiber align to an asymptotic orientation, while the antisymmetric part drives a fiber to rotate.
When a fluid parcel passes through a region with relatively high shear rate, fibers carried by the fluid parcel are most likely to rotate incessantly.
On the other hand, in the region of relatively high extension rate, fibers tend to align to some asymptotic orientation.
Generally, fibers tend to align with the shear plane.
This fact has significant implications in predicting the rheological properties of fiber suspension flows.
American Psychological Association (APA)
Zhou, Kun& Yang, Wei& He, Zhu& Xiao, Ming. 2013. Direct Numerical Simulation of Concentration and Orientation Distribution of Fibers in a Mixing Layer. Abstract and Applied Analysis،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-502838
Modern Language Association (MLA)
Zhou, Kun…[et al.]. Direct Numerical Simulation of Concentration and Orientation Distribution of Fibers in a Mixing Layer. Abstract and Applied Analysis No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-502838
American Medical Association (AMA)
Zhou, Kun& Yang, Wei& He, Zhu& Xiao, Ming. Direct Numerical Simulation of Concentration and Orientation Distribution of Fibers in a Mixing Layer. Abstract and Applied Analysis. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-502838
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502838